Scatterplot, i need to plot one point instead of 4 present in my table
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scatter(A, B, 1, C)
cb = colorbar();
set(gca,'clim',[0 50])
This is my original plot. A,B,C are table columns of same lenght (500k rows, containing latitude, longitude and value correspondent). I need to draw a scatter of 500k/4 x 500k/4 instead of 500k x 500k, every four near points on the original scatter must became a single point and his value (on C) must be the mean value of the four points. How can i do that?
This describes my problem, but i don't have a continuos signal, some points are missing
4 个评论
Adam Danz
2020-1-30
"every four near points on the original scatter" is not clear.
How would you group the 14 points below into groups of 4?
Or perhaps you want to create a small grid and average the values within the grid? Something that may look like this (completely different data, obviously)
Emiliano Ascenzi
2020-1-30
编辑：Emiliano Ascenzi
2020-1-30
Adam Danz
2020-1-31
How are your data arranged? Do you have a vector of x values, a vector of y values, and a vector of color scale values?
Emiliano Ascenzi
2020-1-31
回答（1 个）
the cyclist
2020-1-30
If I understand correctly, you want to do the following:
A_mean = mean(reshape(A,4,[]))';
B_mean = mean(reshape(B,4,[]))';
C_mean = mean(reshape(C,4,[]))';
and plot those instead of your original variables.
3 个评论
Emiliano Ascenzi
2020-1-30
the cyclist
2020-1-30
OK, I guess I did not understand your original question, then.
When you say 4 points "near" each other in your question, do you mean the vector indices are near each other (e.g. the 1st, 2nd, 3rd, 4th values in the vector), or do you mean that when you have plotted them, they are physically near each other (i.e. "nearest neighbors")?
Emiliano Ascenzi
2020-1-30
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